body{
    margin: 0;
    padding: 0;
}
.container {
    display: flex;
    flex-direction: column;
    height: calc(100vw * 0.625); /* 动态计算高度，保持宽高比 */
    max-height: 1200px; /* 限制最大高度为900px */
    min-height: 900px; /*最小600px*/
    min-width: 1440px;
}

.header {
    display: flex;
    justify-content: center;
    align-items: center;
    height: calc(100vw * 0.0694); /* header高度为视口宽度的6.94% */
    min-height: 100px; /* 限制最大高度为100px */
    max-height: 120px;
    background-color: #000;
    color: #fff;
}

.body {
    display: flex;
    flex-grow: 1;
}

.left-sider {
    flex: 1;  /* 宽度占比1/4 */
    background-color: #ddd;
}

.content {
    flex: 2;  /* 宽度占比1/2 */
    background-image: url('./pic/background.jpg'); /* 设置背景图片 */
    background-size: cover; /* 等比例放大图片直到填满容器 */
    background-position: center; /* 背景图居中显示 */
    background-repeat: no-repeat; /* 防止背景图重复 */
}

.right-sider {
    flex: 1;  /* 宽度占比1/4 */
    background-color: #ddd;
}
.footer{
    display: flex;
    justify-content: center;
    align-items: center;
    height: calc(100vw * 0.0694);
    min-height: 100px;
    max-height: 120px;
    background-color: skyblue;
    height: ;
}